I'm planning to buy an Audi S5 coupe and I haven't seen one in the showroom yet. I'm just wondering which colour combination you think looks nicer, black exterior on red interior or black on black.

Black on red look awesome, i think you should pick that one. Black on black is kinda, idk (too usual).

I have Meteor with Magma and never get sick of red.

Black is the superb color and interior should match with car color. now its up to ur taste